Mecha Freeza's Rocket Launcher
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Mecha Freeza's Rocket Launcher (FUNimation "Mecha Frieza's Rocket Launcher") was a rocket launcher used by Mecha Freeza in Super Dragon Ball Z. It was very powerful and could only be unlocked by leveling up Freeza's skill tree. It was included in the redesign by Akira Toriyama made specially for the game.